These are methods for the dplyr generics rename()
and rename_with()
.
They are both translated to data.table::setnames()
.
Usage
# S3 method for class 'dtplyr_step'
rename(.data, ...)
# S3 method for class 'dtplyr_step'
rename_with(.data, .fn, .cols = everything(), ...)
Arguments
- .data
- ...
For
rename()
: <tidy-select
> Usenew_name = old_name
to rename selected variables.For
rename_with()
: additional arguments passed onto.fn
.- .fn
A function used to transform the selected
.cols
. Should return a character vector the same length as the input.- .cols
<
tidy-select
> Columns to rename; defaults to all columns.
Examples
library(dplyr, warn.conflicts = FALSE)
dt <- lazy_dt(data.frame(x = 1, y = 2, z = 3))
dt %>% rename(new_x = x, new_y = y)
#> Source: local data table [1 x 3]
#> Call: setnames(copy(`_DT34`), c("x", "y"), c("new_x", "new_y"))
#>
#> new_x new_y z
#> <dbl> <dbl> <dbl>
#> 1 1 2 3
#>
#> # Use as.data.table()/as.data.frame()/as_tibble() to access results
dt %>% rename_with(toupper)
#> Source: local data table [1 x 3]
#> Call: setnames(copy(`_DT34`), toupper)
#>
#> X Y Z
#> <dbl> <dbl> <dbl>
#> 1 1 2 3
#>
#> # Use as.data.table()/as.data.frame()/as_tibble() to access results